Fermi

What is Fermi?

Fermi asks three estimation questions a day, the kind nobody knows off the top of their head, like how many iPhones have ever been made. You get one guess per question and a built-in calculator for napkin math, then see the real answer and how many players got closer. Your daily score is the average of the three.

How to play

1. 1Read today's three estimation questions.
2. 2Make one guess for each, using the calculator if you like.
3. 3See the real answer and how close you landed.
4. 4Your score is the average of the three; new questions arrive at midnight Eastern.

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